Patent US4824208A successfully refreshed from Google Patents.
Patent US3229500A successfully refreshed from Google Patents.
US3229500A
Expired / Lapsed
US
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Gas metering and analyzing apparatus
Assignee: Bendix Balzers Vacuum Inc
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Filing: 1962-08-09
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Granted: 1966-01-18
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Kraus Thaddaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:16
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/35; G01N21/3504; G01N1/00; G01N1/28; G01N1/40; G01N21/3518; G01N25/00; G01N25/18; G01N33/00; G01N33/20; G01N33/202; G01N33/2022; G01N33/2025; G01N7/00; G01N1/02; G01N1/22; G01N1/2226; G01N2001/2235; G01N1/4022; G01N2001/4033; G01N33/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A GAS METERING AND ANLYZING APPARATUS COMPRISING IN COMBINATION: A GAS SOURCE, A GAS METERING AND ANALYZING DEVICE DEFINING AT LEAST ONE METERING CHAMBER HAVING AN INLET AND AN OUTLET, POSITIVE DISPLACEMENT PUMP MEANS HAVING AN INLET SIDE AND A DISCHARGE SIDE, PASSAGE MEANS DIRECTLY CONNECTING THE DISCHARGE SIDE OF SAID PUMP MEANS TO THE INLET OF THE SAID CHAMBER WHEREBY SAID PUMP MEANS FORMS PART OF SAID CHAMBER WHEREBY SAID VOLUME OF SAID CHAMBER TO VARY DURING OPERATION OF SAID PUMP MEANS, CONDUIT MEANS CONNECTING SAID SOURCE WITH THE INLET SIDE OF SAID PUMP MEANS, AND A VALVE MEANS FOR CLOSING THE OUTLET OF SAID CHAMBER DURING A GAS METERING AND ANALYZING OPERATION WHEREBY THE PRESSURE IN SAID CHAMBER PULSATES AS A FUNCTION OF THE PUMPING ACTION OF SAID PUMP MEANS.
Claim 2
Dependent Claim
132 words
A GAS METERING AND ANLYZING APPARATUS COMPRISING IN COMBINATION: A GAS SOURCE, A GAS METERING AND ANALYZING DEVICE DEFINING AT LEAST ONE METERING CHAMBER HAVING AN INLET AND AN OUTLET, POSITIVE DISPLACEMENT PUMP MEANS HAVING AN INLET SIDE AND A DISCHARGE SIDE, PASSAGE MEANS DIRECTLY CONNECTING THE DISCHARGE SIDE OF SAID PUMP MEANS TO THE INLET OF THE SAID CHAMBER WHEREBY SAID PUMP MEANS FORMS PART OF SAID CHAMBER WHEREBY SAID VOLUME OF SAID CHAMBER TO VARY DURING OPERATION OF SAID PUMP MEANS, CONDUIT MEANS CONNECTING SAID SOURCE WITH THE INLET SIDE OF SAID PUMP MEANS, AND A VALVE MEANS FOR CLOSING THE OUTLET OF SAID CHAMBER DURING A GAS METERING AND ANALYZING OPERATION WHEREBY THE PRESSURE IN SAID CHAMBER PULSATES AS A FUNCTION OF THE PUMPING ACTION OF SAID PUMP MEANS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |